Update bicycle_rental.json - Add a reference field

closes #1516

Author: kjonosm

data/presets/amenity/bicycle_rental.json

@@ -12,7 +12,8 @@
     "moreFields": [
         "{@templates/poi}",
         "address",
-        "covered"
+        "covered",
+        "ref"
     ],
     "geometry": [
         "point",